859M

From small stems to big timber, softwood to hardwood, level or sloped ground, John Deere has a disk saw felling head that’s designed for your job. The new FR27 boasts our highest single-cut-capacity, with over 16 percent more accumulation area than the FR24B, making it an excellent choice for large timber. Delivering efficient, multi-stem high-accumulation performance with huge pocket and tall horns, the FS50 and FR50 felling heads are best suited for thinning and high-production plantation harvests. For more versatile applications, the FS22B and FR22B heads are robust enough to handle large trees, with the tree-handling performance to also efficiently accumulate mid-sized timber. If lightweight is a must, the FR21B is our lightest, high-rotation head that is optimized for small to mid-sized timber.

• Wide range of in-house felling head attachments
• Optimized for John Deere carriers
• Heads are factory-installed
• High-rotation heads provide easier placement of bunches

Model
FS50
FR50
FR21B
FS22B
FR22B
FR27

Cut Capacity
510 mm (20.0 in.)
545 mm (21.5 in.)
559 mm (22.0 in.)

690 mm (27.2 in.)

Accumulation Area
0.64 m2 (6.9 sq ft)
0.46 m2 (5.0 sq ft)
0.48 m2 (5.2 sq ft)
0.70 m2 (7.5 sq ft)

Ideal Timber Range
150-350 mm (6-14 in.)
250-460 mm (10-18 in.)
300-500 mm (12-20 in.)
460-660 mm (18-26 in.)

Typical Application
Plantation, thinning, and select cut
Select cut and final felling
Select cut and final felling
Final felling and swamp logging (swell)

Typical Operation
High accumulation
Short-to-mid-height timber
Mid-to-high accumulation
Mid-height timber
Mid accumulation
Mid-to-tall-height timber
Mid-to-low accumulation
Tall timber

Weight
3,370 kg (7,430 lb.)
3,660 kg (8,070 lb.)
3,140 kg (6,920 lb.)
3,550 kg (7,830 lb.)
3,840 kg (8,470 lb.)
4,250 kg (9,370 lb.)

Wrist Rotation

30 degrees
312 degrees
302 degrees
30 degrees
312 degrees
295 degrees

Felling head specs

Operating for long hours is common. As the day goes on, maintaining consistent productivity is important. One factor in keeping high, consistent productivity is a comfortable operating environment. The M-series boasts greatly increased window area for better visibility and more cab space over prior models. Low-effort electrohydraulic (EH) controls allow you to customize the button and lever layout to your preference and save your settings when switching between operators.

• Large and spacious operator station designed with operator input
• Ergonomic controls and increased cab volume over prior models
• Floor-to-ceiling front window, large side windows, skylight, and optional floor window (standard on leveling machines) significantly expands operator visibility
• Optional heated and ventilated seat

Now included in base machine, the JDLink telematic system provides the foundation for John Deere’s Precision Forestry solutions. These systems help optimize your machine, your uptime, and your jobsites, which ultimately lead to improved production efficiency.

• JDLink connectivity enables you to view several parameters of your machine, including its location, fuel level, average fuel burn rate, idle time, machine utilization, and much more
• When enabled, John Deere Connected Support™ allows the dealer to provide remote diagnostics, rapid service response with the right part in hand, and parts availability; all to maximize machine uptime
• John Deere’s centralized Machine Health Monitoring Center analyzes data from thousands of connected machines, identifies trends, and develops recommended actions to help prevent downtime
• TimberMatic Maps gives enhanced visibility to the jobsite, which streamlines communication and increases efficiency
• TimberManager™ provides remote visibility to your operation from any device, allowing you to make smart business decisions based on real-time production data

Easy access to service components helps operators perform daily checks and any scheduled maintenance, which helps minimize unplanned downtime and costly repairs down the road. The 800M-series tracked machines feature a fully opened enclosure and service doors for excellent access to all scheduled maintenance areas.

• Smart debris management designed to keep your workspace free and clear
• Variable-speed reversing fan helps minimize debris build-up in the cooling package
• Swing-out doors provide wide-open access to the cooling package
• Optional vacuum pump for convenient servicing of hydraulic components
• Grease banks for servicing hard-to-reach joints
• Large fuel tank extends intervals between fill-ups
• Remote diagnostics and machine monitoring with JDLink™

The M-series undercarriage is purpose built to handle severe forestry applications while maintaining maneuverability, especially in thinning operations. The track frames are shaped to deflect debris while also providing strength and stability.

• Long, wide undercarriage provides solid balance to maximize stability
• Exceptional tractive effort for negotiating difficult or steep terrain, deep snow, and swamps
• Optional closed-loop hydrostatic drive on 800M/MH models for increased multifunctioning performance
• Various track pad widths and grouser types are offered to best suit the machine to its application
• Optional tri-track helps prevent premature wear due to track twisting

John Deere’s leveling system with smooth-cushioned control keeps the center of gravity over the tracks for exceptional stability on steep slopes. The expansive leveling envelope tilts up to 26-degrees forward for excellent steep-slope operation. Combined with a long and wide undercarriage, the leveling system maximizes performance in challenging terrain.

• Additional operator comfort when maneuvering on slopes
• Common undercarriage between the 859M and 959M leveling machines
• Maximizes boom and swing performance when working on slopes
• Provides exceptional stability and continuous machine operation on extreme slopes

Slope indicator

An available option on all leveling M-series machines, the slope-monitoring system measures the actual ground-slope angle the machine is working on and displays it on the in-cab monitor, for more confident operation in tough steep-slope conditions and potentially greater overall efficiency.